RISC微处理器指令扩展接口设计  

Design of Instruction Extended Interface of RISC Microprocessor

作　　者：郭怡惠 张立朝[1] 戴紫彬[1] 

机构地区：[1]解放军信息工程大学,郑州450000

出　　处：《小型微型计算机系统》2014年第8期1827-1830,共4页Journal of Chinese Computer Systems

摘　　要：为解决通用RISC微处理器进行指令扩展难度大的问题,分析了RISC微处理器的基本结构,提出一种在处理器增加指令扩展接口的方法.处理器用户在扩展接口挂接扩展模块即可实现指令扩展而且不需要进行大量的验证工作,缩短了设计周期.通过对预留的扩展指令分类、设计指令扩展结构和接口单元以及确定扩展模块的信号与时序要求,设计完成处理器指令扩展接口.设计指令扩展模块,测试指令扩展功能并与普通处理器指令扩展的过程进行对比,结果显示增加扩展接口以后处理器能够实现指令扩展并可以简化过程,从而说明该方法可以应用到处理器的设计中.To solve the problem of the General purpose RISC microprocessor, extended instruction is difficult, analysis the basic struc- ture of RISC microprocessor, and proposes an approach to design an instruction extended interface on microprocessor. Microprocessor user connect extended interface with extension module can realize extended instruction and need not plenty of verification works, shortened design period. By classify reserved extended instruction,design instruction extended structure and interface unit and confirm the extension module＇s signals and timing requirements, finish the instruction extended interface of microprocessor. Design the instruc- tion extension module, test function of instruction extension and compared the process with ordinary microprocessor, the results show that microprocessor can realize instruction extension after design the extended interface and can simplify the process, therefore this de- sign approach can be applied into general microprocessor design process.

关 键 词：RISC 微处理器 指令扩展 接口 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]